[INFO] cloning repository treyzania/brainfuck
[INFO] running `"git" "clone" "--bare" "git://github.com/treyzania/brainfuck.git" "work/cache/sources/gh/treyzania/brainfuck"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/treyzania/brainfuck'...
[INFO] running `"git" "clone" "work/cache/sources/gh/treyzania/brainfuck" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/treyzania/brainfuck"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/treyzania/brainfuck'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/treyzania/brainfuck" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/treyzania/brainfuck"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/treyzania/brainfuck'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4923325699a6d1f4dbf88981c30bbc3455a458ea
[INFO] sha for GitHub repo treyzania/brainfuck: 4923325699a6d1f4dbf88981c30bbc3455a458ea
[INFO] validating manifest of treyzania/brainfuck on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of treyzania/brainfuck on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing treyzania/brainfuck
[INFO] finished frobbing treyzania/brainfuck
[INFO] frobbed toml for treyzania/brainfuck written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/treyzania/brainfuck/Cargo.toml
[INFO] started frobbing treyzania/brainfuck
[INFO] finished frobbing treyzania/brainfuck
[INFO] frobbed toml for treyzania/brainfuck written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/treyzania/brainfuck/Cargo.toml
[INFO] crate treyzania/brainfuck already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded clap v2.29.3
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking treyzania/brainfuck against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-2/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/treyzania/brainfuck:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f446e87aaba185fe37815e56d00b36be823f78a42b73df3b9976426b58d41e68
[INFO] running `"docker" "start" "-a" "f446e87aaba185fe37815e56d00b36be823f78a42b73df3b9976426b58d41e68"`
[INFO] [stderr]     Checking clap v2.29.3
[INFO] [stderr]     Checking structopt v0.1.7
[INFO] [stderr]     Checking brainfuck v1.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:125:21
[INFO] [stderr]     |
[INFO] [stderr] 125 |                 let mut tab = &indent(indentation);
[INFO] [stderr]     |                     ----^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:125:21
[INFO] [stderr]     |
[INFO] [stderr] 125 |                 let mut tab = &indent(indentation);
[INFO] [stderr]     |                     ----^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.08s
[INFO] running `"docker" "inspect" "f446e87aaba185fe37815e56d00b36be823f78a42b73df3b9976426b58d41e68"`
[INFO] running `"docker" "rm" "-f" "f446e87aaba185fe37815e56d00b36be823f78a42b73df3b9976426b58d41e68"`
[INFO] [stdout] f446e87aaba185fe37815e56d00b36be823f78a42b73df3b9976426b58d41e68